121542233 has 2 divisors, whose sum is σ = 121542234. Its totient is φ = 121542232.

The previous prime is 121542229. The next prime is 121542241. The reversal of 121542233 is 332245121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74166544 + 47375689 = 8612^2 + 6883^2 .

It is a cyclic number.

It is not a de Polignac number, because 121542233 - 2² = 121542229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121542199 and 121542208.

It is not a weakly prime, because it can be changed into another prime (121542203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60771116 + 60771117.

It is an arithmetic number, because the mean of its divisors is an integer number (60771117).

Almost surely, 2^121542233 is an apocalyptic number.

It is an amenable number.

121542233 is a deficient number, since it is larger than the sum of its proper divisors (1).

121542233 is an equidigital number, since it uses as much as digits as its factorization.

121542233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 121542233 is about 11024.6194038615. The cubic root of 121542233 is about 495.3464676384.

Adding to 121542233 its reverse (332245121), we get a palindrome (453787354).

The spelling of 121542233 in words is "one hundred twenty-one million, five hundred forty-two thousand, two hundred thirty-three".